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linux:notes:x86_energy_perf_policy

x86_energy_perf_policy

watch --interval '0.5' grep \'cpu MHz\' '/proc/cpuinfo'
  • Check
sudo x86_energy_perf_policy
  • Max Performance
sudo x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force

Scripts

TuneD

  • Automatic power-management like tlp
  • Required to remove tuned so it doesn't override below udev rule
sudo dnf remove 'tuned'

AC

sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/ac-power.sh' && sudo restorecon -F -I -v '/etc/udev/scripts.d/ac-power.sh' && sudo chmod +x '/etc/udev/scripts.d/ac-power.sh'
#!/bin/bash

# AC
x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force

# End
'/etc/udev/scripts.d/ac-power.sh'

Battery

sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/battery-power.sh' && sudo restorecon -F -I -v '/etc/udev/scripts.d/battery-power.sh' && sudo chmod +x '/etc/udev/scripts.d/battery-power.sh'
#!/bin/bash

# Battery
x86_energy_perf_policy --all 'balance-power' --turbo-enable '0' --force

# End
'/etc/udev/scripts.d/battery-power.sh'

udev Rule

sudo -e '/etc/udev/rules.d/99-power.rules' && sudo restorecon -F -I -v '/etc/udev/rules.d/99-power.rules' && sudo udevadm control --reload
# AC
SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/etc/udev/scripts.d/ac-power.sh"

# Battery
SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/etc/udev/scripts.d/battery-power.sh"

# End

Check

  • If plugged-in, should report something like Write to unrecognized MSR 0x770 by x86_energy_perf 1-second/early boot
sudo dmesg | grep 'MSR'
/usr/local/www/wiki/data/pages/linux/notes/x86_energy_perf_policy.txt · Last modified: by Sean Rhone